Sensation of the face

The video tutorial explains the cutaneous innervation of the face through the trigeminal nerve and its three branches: V1 (ophthalmic), V2 (maxillary), and V3 (mandibular). Each branch is responsible for sensory innervation of specific facial regions. The tutorial also covers the testing of facial sensory regions and notes exceptions like the great auricular nerve. Images used in the video are credited to Mark Nielsen.

Which nerve is responsible for the cutaneous innervation of the face?

• Facial nerve

• Trigeminal nerve

• Vagus nerve

• Hypoglossal nerve

What areas does the ophthalmic branch (V1) of the trigeminal nerve innervate?

• Side of the temple

• Upper lip and corner of the nose

• Bridge of the nose, upper eyelid, and forehead

• Bottom lip and chin

Which branch of the trigeminal nerve is responsible for innervating the upper lip and corner of the nose?

• Ophthalmic branch (V1)

• Maxillary branch (V2)

• Mandibular branch (V3)

• Facial nerve

The mandibular branch (V3) of the trigeminal nerve provides sensation to which of the following areas?

• Upper eyelid and forehead

• Bridge of the nose

• Upper lip and corner of the nose

• Bottom lip, chin, and jaw

Which nerve overlaps with the trigeminal nerve in the region near the ear?

• Great auricular nerve

• Auriculotemporal nerve

• Lesser occipital nerve

• Facial nerve